A simulation study on CO2 sequestration in saline aquifers: Trapping mechanisms and risk of CO2 leakage

Foroozesh, J. and Dier, M.A. and Rezk, M.G. (2018) A simulation study on CO2 sequestration in saline aquifers: Trapping mechanisms and risk of CO2 leakage. In: UNSPECIFIED.

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Abstract

Carbon dioxide (CO2) is one of the main greenhouse gases that its high concentration in the atmosphere has caused the global warming issue. Sequestering CO2 in a suitable geological subsurface formation can be a feasible method to reduce the CO2 concentration in the atmosphere. CO2 sequestration in saline aquifers can store a significant volume of CO2 underground for thousand years. However, injecting CO2 into such formations does not guarantee a safe storage because CO2 could leak back to surface or contaminate the formation water. Hence, a proper evaluation of the sequestration site is required. In this study, a case study regarding CO2 sequestration in saline aquifers was conducted using CMG-GEM compositional simulator to study the effects of aquifer permeability, injection pressure and well trajectory on CO2 trapping mechanisms during sequestration process. A field-scale model with one injector well in which CO2 was injected into the aquifer for ten years and simulated for hundred years was studied. The results showed that, CO2 solubility trapping is the dominant mechanism with less risk of leakage when the aquifer has a good vertical permeability and the injection pressure is not high regardless of the well trajectory. © 2018 The Authors, published by EDP Sciences.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Additional Information: cited By 18; Conference of 2018 UTP-UMP-VIT Symposium on Energy Systems, SES 2018 ; Conference Date: 18 September 2018 Through 19 September 2018; Conference Code:141921
Uncontrolled Keywords: Aquifers; Global warming; Greenhouse gases; Hydrogeology, Compositional simulators; Field-scale modeling; Injection pressures; Sequestration process; Simulation studies; Subsurface formations; Trapping mechanisms; Vertical permeabilities, Carbon dioxide
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 09 Nov 2023 16:36
Last Modified: 09 Nov 2023 16:36
URI: https://khub.utp.edu.my/scholars/id/eprint/9788

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